\textbf{21.} Which verse is most closely related in meaning to the following verse?
\textbf{``If in the plains the wind of Ari blows through the mountains''}
\begin{enumerate}
\item[(1)] \textit{[Verse about free bird]}
\item[(2)] \textit{[Verse about freedom]}
\item[(3)] \textit{[Verse about Susan's growth]}
\item[(4)] \textit{[Verse about Susan and love]}
\end{enumerate}